Well we used a 4 jaw chuck on a lathe at about 50 RPM, it worked nicely, perfectly round holes .4525. Only problem was a scratch on the cylinder of one of the ones done. We have 2 to go, unfortunately mine is still to go, will be nervous until its done.
Brownell's Cylinder reamer
My new ruger 45 colt has a .4515 bore and .450 cylinder mouths. SInce My brother has the same problem with his 45 and my boss has the same problem with two of his 45s, we all went in on the reamer. The pilot is .448. Can this be shimmed up with masking tape or something as the pilot kit is an extra ำ?
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